qemu-devel.nongnu.org archive mirror
 help / color / mirror / Atom feed
From: Dirk Behme <dirk.behme@googlemail.com>
To: Alexander Voropay <a.voropay@equant.ru>, qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] [PATCH] Add MIPS ELF loader
Date: Thu, 30 Mar 2006 19:34:59 +0200	[thread overview]
Message-ID: <442C16C3.1000105@gmail.com> (raw)
In-Reply-To: <146901c65406$4d029670$e90d11ac@spb.in.rosprint.ru>

Alexander Voropay wrote:
> I'm trying to implement a mips_bios, unfortunately, quemu seems can't
> run a code at the 0xbfc00000 region.
> 
> See a http://pastebin.com/628591
> 
> The conventional 'move k0,zero' instruction (line 35) causes an general
> exceprion to 0xbfc00380, see line 70

Try to change the following lines in hw/mips_r4k.c:

//#define KERNEL_LOAD_ADDR 0x80010000
#define KERNEL_LOAD_ADDR 0xBFC00000

//cpu_register_physical_memory(0, ram_size, IO_MEM_RAM);
cpu_register_physical_memory(0x1fc00000, ram_size, IO_MEM_RAM);

//kernel_size = load_image(kernel_filename,
//	 		      phys_ram_base + (kernel_base - 0x80000000));
kernel_size = load_image(kernel_filename, phys_ram_base);

Works for me:

(gdb) p/x $pc
$1 = 0xbfc00000
(gdb) x/2i $pc
0xbfc00000 <_start>:    b       0xbfc00400 <reset>
0xbfc00004 <_start+4>:  nop
(gdb) x/2i 0x1fc00000
0x1fc00000:     b       0x1fc00400
0x1fc00004:     nop
(gdb)

Best regards

Dirk

  reply	other threads:[~2006-03-30 17:34 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-03-28  6:57 [Qemu-devel] [PATCH] Add MIPS ELF loader Dirk Behme
2006-03-28 13:01 ` Thiemo Seufer
2006-03-30 13:40   ` Dirk Behme
2006-03-30 13:53     ` Thiemo Seufer
2006-03-30 14:29       ` Alexander Voropay
2006-03-30 17:34         ` Dirk Behme [this message]
     [not found]         ` <442C0F57.3010200@gmail.com>
2006-04-02 12:54           ` Alexander Voropay
2006-04-23 17:16 ` Fabrice Bellard
2006-04-25 23:57   ` Thiemo Seufer
     [not found] <154e01c66453$111e4f20$e90d11ac@spb.in.rosprint.ru>
2006-04-20 10:16 ` Marius Groeger
2006-04-20 10:28   ` Thiemo Seufer
2006-04-20 11:02     ` Alexander Voropay
2006-04-20 12:19       ` Alexander Voropay

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=442C16C3.1000105@gmail.com \
    --to=dirk.behme@googlemail.com \
    --cc=a.voropay@equant.ru \
    --cc=qemu-devel@nongnu.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).